Carrie Underwood: Rolling Stones Concert Surprise Guest!

“I’m pretty sure tonight is going to be one of the greatest nights of my life! I’m singing with THE ROLLING STONES!!! Still can’t believe it!” the 30-year-old singer tweeted before the show. “Just had rehearsals! The guys are so great! They made this country girl feel right at home!”

“I just sang with the @RollingStones! Holy cow! I walked off stage and said, “What just happened?!” Still can’t believe it! :)” Carrie wrote after performing “It’s Only Rock & Roll” with the guys.

“8 years ago today, I won @AmericanIdol and tonight, I sang with the @RollingStones! Wow, so much has happened! #Thankful,” she addded.